<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getGoodsList">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodsList"
                border
                stripe>
        <el-table-column type="index">
        </el-table-column>
        <el-table-column prop="goods_name"
                         label="商品名称"></el-table-column>
        <el-table-column prop="goods_price"
                         label="商品价格"
                         width="95px"></el-table-column>
        <el-table-column prop="goods_weight"
                         label="商品重量"
                         width="70px"></el-table-column>
        <el-table-column prop="add_time"
                         label="创建时间"
                         width="140px">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作"
                         width="130px">
          <template slot-scope="scope">
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"></el-button>
            <el-button type="danger"
                       icon="el-icon-delete"
                       size="mini"
                       @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页功能 -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[5, 10, 20, 50]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10,
      },
      //商品列表
      goodsList: [],
      //总数据条数
      total: 0
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    //根据分页获取对应的商品列表
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    //页码显示条数的更改
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    //当前页码数的更改
    handleCurrentChange (newNum) {
      this.queryInfo.pagenum = newNum
      this.getGoodsList()
    },
    //根据id删除商品行
    async removeById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('商品删除失败')
      }
      this.$message.success('商品删除成功')
			this.getGoodsList()
    },
    goAddpage(){
      this.$router.push('/goods/add')
    },
  },
}
</script>

<style lang="less" scoped>
</style>